Revolving door.



M. S. ROSENFELD.

REVOLVING DOOR.

APPLICATION FILED JULY 31.1915. RENEWED SEPT. I8. 1918.

Pgtented Nov. 5, 1918.

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iiiik M. S. ROSENFELD.

REVOLVING DOOR. APPLICATION nun JULY 31.1915. azucwzo SEPT. 18.4918.

1 283,921 l atented. Nov. 5, 1918.

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REVOLVING noon. APPLICATION FILED JULY 3] I915- RENEWED SEPT- IB, I9l8.

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M. S. ROSENFELD.

REVOLVING DOOR.

APPLICATION FILED JULY 31'. 1915. RENEWED SEPT I78, X918.

1 flg 1 Patented Nov. 5, 1918.

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ment 1 of my JACOB SCHEGHTER, OF NEW YORK, 111'. Y.

REVOLVING lDOOlEt.

Patented Nov. d, 1918.

Application filed July 31, 1915, Serial No. 12,96t. Renewed September18, 1913. Serial No. 251,675.

To all whomz't may concern:

Be it known thatl, MAURICE S. Rosan- FELD, a citizen of the UnitedStates, residing in the borough of the Bronx county of Bronx, city andState of New York, have invented a new and useful Improvement inRevolving Doors, of which the following is a specification.

My invention relates to that class of door which is pivoted at thecenter, and revolves on such pivot instead of being hinged at one sideof the door and capable of being swung back and forth on the hinges.

The objects of my invention are 1. To produce a door of the revolvingtype wherein the number of parts will be materially reduced.

2. To provide means whereby the door will always swing to positionacross the vestibule. t

3. To provide means whereby the doors may be operated as ordinary doorsbyswing- 7 ing on pivots along their outer edges without the use oftools such as keys, bolts or the like; and

45. To provide means for locking the door in position across the dooropening.

These and further objects will more fully appear in the followingspecification and accompanying drawings considered together orseparately. t

T have illustrated the preferred embodiinvention in the accompanyingdrawings in which i Figure 1 is a horizontal section of my 1mprovedrevolving door and vestibule, taken on the line 1-1 of Fig. 2;

Fig. 2 is an elevation of a door and vestibule;

Fig. 3 is a horizontal section on the line 3-3 of Fig. 9;

Fig. 4 is a side elevation on the line 4.4 ofFig. 3:; e t

Fig. 5 is a vertical section on the line 5-5 of Fig. 4; e

r Fig. 6 is a similar view showing the door locked against rotation onits central pivot when the valves are swung on their individual pivots;

Fig. 7 is a detail sectional view showing the door locked in positionacross the vespartly in section tibule; r

Fig. 8 is a section on the line e of Fig. '1; 1

Fig. 9 is a sectional view showing the lower pivot and lock.

F1g. 10 is a detail view showing a means for preventing backwardmovement of the door.

ln all of the above views, like parts are designated by similarreference characters in all of the figures.

In the embodiment illustrated, T have MAURICE S. ROSENFELD, OF NEW YORK,N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TU

vestibule which rests on a floor 5. A revolving frame composed of sidemembers 6, 7, a top member 8, and a bottom member 9, is pivoted at 10 inthe floor and by means of a tubular pivot 11, to the top beams 3 and 4.The pivot 11 isrigidly secured to the member 8, and rotates in the beams3 and 1.

The side members 6 and 7 are each provided with wings 12 of a lengthsufficient to close the openings 2 when the revolving frame is in theposition shown in dotted lines; in Fig. 1.

j Pivoted to the top and bottom members 8 and 9, and adjacent to theside members 6 is a valve 13 and a similar valve 1 1 is piv oted in themembers 8 and 9 and adjacent to the side member 7.

Slidablymounted in the bore of the pivot 11 is a plunger 15 having aconical lower extremity 16. The conical lower extremity of the bolt isof reduced diameter, and a shoulder 1? is thus formed. Projecting fromthe reduced portion of the bolt is a pin 18. Carried at the upper end ofthe valve 13 at the point farthest removed from its pivot is a socket 19provided with inclined sides 20, 20. Mounted in a socket in the freeside of the valve 141 is a spring pressed plunger 21 is a pin 28. Aspring 29 holds the pin in engagement with the bolt and when the latteris raised the pin engages under the shoulder 17 and holds the bolt up.

* Pi'voted to the beam 4 at 31 is a lever having a long curved arm 32and a short arm 33. The arm 33 is connected by means of a link 35 with alever 36 pivoted at 37 to the beam 4. The 1ever 36 has an inclinedextremity' 38 and' a shoulder 39. Attached to the lever-36i is a cord orchain 34 which passes around a pulley on the lever 32 and overa pulley40 outside'of the vestibule. A weight 41 is attached to the cord andserves to draw the levers toward each other.

1;. Riigidly secured to the pivot 11 is a pair of arms 42 which extendin the same longitudinal planeas the revolving frame. Each armis'provided with a roller 43 adapted to be engaged by the levers 32 and36.

The lower member 10 is provided with a pawl 44- which engages ratchetteeth in a base plate 45 and prevents backward movement of the revolvingframe.

Carried by the free edge of the valve 13 is a lock 46, of well knownconstruction, provided-withthree bolts47', 48 and 49. The bolt 47*projects upward and is adapted to engage/the pin 18." The bolt 48projects downwardand is adapted to engage a keeper in the plate 45.. Thebolt 49' projects laterallyand isadapted to engage'a keeper inwallof-the vestibule. The-bolt 49 is provided with ahinge 50 which is inline with thekpivots of the'valve in which the bolt is "located."

The upper edges of the wings; 12 and 13 are each provided with a flatplate51,which will act as a roof when the door is in the position shownin dotted 'lin'esin Fig.1. 40

The extremity of each lever 32 and 36is rovided with a roller 53 and 55respectively. hese rollers are supported on tracks 54 extending from:the member 4 to the edges of the vestibule.

The operation is as follows With the revolving'frame and valves in theposition shown in Fig. 1, the frame may revolve in the direction" of thearrow by applying pressure tothe lower" side of the valve-14 or theupper sideof the valve 13. The-pawl 44' will prevent movement in theopposite-direction. f When the revolving frame reaches the'positionshown in broken lines in Figs. 1 and 3, the roller 43 on the arm 42 willbe about to leave the inclined portion 38 :of the lever 36, and thelever will, by reason of its connection to the'lever j 36'by the:1ink35,be swung to the position shown-in dotted lines in Fig. 3.. A slightforwardmovement of-the revolvinv frame I will cause the roller to passfrom The part 38 and drop behind the shoulder 39. The

weight 41 will return the levers 36 and 32 to their normal positions; Iandthe engagement of thelever 32 with the roller 43 nearest it shoulderin the plunger.

when considerable pressure is applied to one or the other side of-bothvalves near the adjacent edges thereof, the conical end of the plunger.15 will be forced from the conical socket inthe valve 13 and the valveswill be caused to turn on their pivots. The relative movement of thevalves will cause the lunger 21 to be depressed, and the valves will befree to swing to the positions shown in dottedlines in Fig. 1. When theplunger 15 is raised from its socket, the shoulder 17 will be broughtabove thepin 28, which will be forced inward by the spring 29 to engagebelow the shoulder 17 and support the plunger out of contact withthevalve 13. The raising of the plunger 15 will cause the clutch member24 to engage the member 25 and lock the revolving frame againstrotation. When it is desired to again place the, 1

parts in. position to act as-a revolving door, the pin 28 is withdrawnfrom beneath .the The plungerw15 will fall and its endwill lie inthe-path of the upper edge of the valve 13. On: swinging the valveinward, the end of the plunger will be caused to engage the socket, andthe valve will be locked. By swinging the;v,alve 14 inward the plunger21 will engage the socket 19-, thus locking theyalves together-.

The door may now be operated as-first above described.

When it is desired to securely lock the door in the position showninfull lines in Fig. 1, a key is inserted in the lock 46 and turned. Thismovement will operate the bolts 47, 48 and 49, and the parts will belocked against movement.

In accordance with the provisionsof the patent statutes, I havedescribedtheprinciple of my invention together with the apparatus, which I nowconsider to represent the best embodiment thereof, but I desire to haveit understood that the apparatus shown is merely illustrative, and thatthe invention can be arried out in other ways without departing from thespirit of my invention.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent of the United States, is as'follows:

1. A revolving door having a stationary frame, a revolving frame, ap1vot earned by the latter and journaled in the former, a

weasel plunger carried by the pivot, a valve pivoted in the revolvingframe, a bolt carried by the valve, said bolt cooperating with therevolving frame to lock the valve to the frame, a second valve pivotedin the revolving frame, a plunger carried by the second valve, saidplunger cooperating with the first valve to lock the valves together,and means where-, by the connection between the valves may be broken bypressure on one valve.

2. A revolving door having a stationary frame, a revolving frame, apivot carried by the latter and journaled in the former, a plungercarried by the pivot, a valve ivoted in the revolving frame, a boltcarried by the valve, said bolt cooperating with the revolving frame tolock the valve to the frame, a second valve pivoted in the revolvingframe, a plunger carried by the second valve, said plunger cooperatingwith the first valve to lock the valves together, and means whereby theconnection between the valves may be broken by pressure on one valve,and means for breakin the connection between the first valve and t eframe.

3. A revolvin door having a stationary frame, a revolving frame, a pivotcarried by the latter and journaled in the former, a plunger carried bythe pivot, a valve ivoted in the revolving frame and engage by theplunger, a bolt carried by the valve, said bolt cooperatin with therevolving frame to look the vave to the frame, a second valve pivoted inthe revolving frame, a plunger carried by the second valve, said lungercooperating with the first valve to ock the valves together, meanswhereby the connection between the valves may be broken by pressure onone of the valves, means for disengaging the plunger from the firstmentioned valve, and for simultaneously looking the revolving frame tothe stationary frame.

This specification signed and witnessed this first day of July, 1915.

MAURICE S. ROSENFELD.

Witnesses:

J OHN L. Lo'rson, Jason Sonnonrrnr.

copies at this patent may be obtained tar five cents each, by addressingthe "fiommtnisner of Batentu,

. Washington, it. U.

